Scraper for tractor wheels



Oct. 27, 1931. K. VON BRETHORST 1,828,824

SCRAPER FOR TRACTOR WHEELS Filed April 5. 1950 Patented a. 27, 1931 1 2 24 UNITED STATES PATENT OFFICE i i I Q l I i IIVIKARYL vonlnnnrnons'r, or ism, ILLINOIS v I son-Area Hon cinnamon. WHEELS U I Application filed April 3, 1530. Serial No. 4 41333. Q I I This invention is a scraper for tractorv {fi 8 i l d id vi wbf'th wheels. spring arm.

The main object of the invention is to p 1O- I Referring now more particularly to the vide a scraper which may be readilyapplied drawing the reference character A designates I to tractors of practically any type and which the left wheel of a tractor having lugsB along will operate to completely remove mud or the, each of its edges leaving a clear space beili'k fromiboth'the periphery and the edge tween as shown; The fender G is secured to io f-ea c'h wheel. I the platform'D of the tractor and rests over Anotherobject is to provide a scraper aS- the wheel A- as shown. Theforegoing ele-,

-L10 'sembly including a blade for seraping'bements are of conventional form and no i itween the wh'eellugs anda blade for scrapventionis claimed therefor.

ing the inner edgesof the wheel whereby mud g I In carrying out the invention I provide an 'or'the likewil'l be completely and effectively attaching bracket designated generally at 1 scraped from the wheel. Y which comprises the back plate 2 slotted at :15' Another object is to provide a means ,3 so that it may be attached to the lower rear whereby the blade assembly will be released edge of the fender G by'thebolts 4 by means from the tractor in case the knives should of which said fender is secured to the platj str-ike the lugs on the wheel or any obstrucform D.- Hangers 5 are extended rearwardtion which might lodge between" the" lugs ly fromthe loweredgeof the plate 2.ad 'a- 20 'thus preventing injury to the scraper or to ,cent each end thereof and these hangers have 1-25 use is not desired 'the' tractor. I I U-sha-ped open loops 6 f0r a purpose to be IA 'further object is to provide a means described. L-shaped arms? are extended-bewhereby thescraper may be readily and'contween "the'lower edge of the plate 2 and the r veniently removed from the tractor when its lower edge ofthe loops 6 and both the hangj I ers 5.and.t hear1ns 7 are providedwith ver- The foregoing andlother objects together 'tically aligned a'pertures .8 through which "with meanswhereby the same may be carbolts 9 are slidably mounted. "Clamping 'ried into efliect' will best be understood from plates 10 are provided andlthe same are fixed the following desoripton of apreferred' emto the bolts '9 adjacent their upper ends,these 30 bodiment' of the invention, taken in connecupper endsof the said bolts being then bent attaching clamP' 1 tion with the accompanylng' drawing )intc the form'of eyes, 11 to serve as 'finger h e holds. Nuts 12 are threadedon the lower ends F g vl' VleW ti e of the bolts 9 and expansion coil springs 13 l l Oi 3' Q lPP 37 h my are seated over said boltsand bracedbetween 9 I the nuts 12 and thedescribed arms *7.. A 2 i m l y i the Structure shaft Misset in the loops 6: and held in place l wn m Flgure r v i therein by the'clampingplates '10 iwhichare I. :.l ef, Is an ii fig w f held downwardly in contact therewith by the racket or ,a a mg e E f 0 e springs 13. It will be understood; however, I I that the shaft l lniay bereadily" removedfrom the hangers 5J-by grasping the eyes 11 -of the bolts 9 andrpulling upward so that the loops Gare opened by the raising of the I I I I I plates '10. In order to prevent the clamping 5 "Figure 6 isaan enlargedside view of the. Pldtes 1O and releasing h wheel center scraping blade. :shaft. lidue to vibration of the same when in 1 -Fig-ure 'f is'an enlarged detail of the upper use on the tractor, small lugs 15 are extended .endxofthewheel edge scraping'blade and its upwardly from the outer legs of the loops 6 .I @forengagement with notches'lfi provlded-in 100 "f Figure 4 'is an enlarged-rear-view of=one end.of'thebracket. L f I ''Figure;5"is an enlargedside viewof the 1 wheel edge scraping blade and its attaching the outer ends of the plates 10 for their reception.

A wheel center scraping blade 17 is provided and the same has its shank looped back upon itself at 18 providing an eye 19 to fit over the shaft 14. A set screw 20 is threaded in the eye 19 and clamping bolts 21 are pro vided through: the blade and its: looped. portion by means of which the said blade may be securely clamped in any position on the shaft 14. The free end of the bladel? is sharpened as at 22 and the blade is cut away at each side and narrowed intermediate its ends as at 23 to prevent the accumulation of mud or the like between it and the wheel A as will be HDdBI'StOOdL The wheel edge scraping blade 24 is arcuate in: form with its lower or outer edge 25' sharpened and the shank 26 of this. blade is twisted a quarter turn as shown. An attaching clamp 31 is provided'the. same: having its end looped. back upon itself; at 2.7 to provide an e e. 28. for the reception of the shaft14, said amp being secured thereon by a set screw 29 and. clamping bolts 30 as. hereinhefore described with reference to the wheel center scraping blade '17.. The shank% of the blade 24 is secured to. this clamp. 31 by means of the bolts 32 as. shown: j

A. spring arm 33 isprovided, theasame having an eye 34 at one. end: for the reception of the. shaft 14 to. which saidv armis secured by a set screw 35". The other or free end, of the arm isprovidedwith a hook 36 upon which isv adapted to be. secured the retractile. coil spring 37. A stop arm. 38: is also provided and the same has an eye 39 at. one end to receive the shaft. 14 and a. set: screw 40 by means of which said arm may be secured to the shaft. 7 7

The wheel center scraping: blade. 17 is secured to the shaft 14 in alignment with the clear center space on the wheel A 'and the wheel edge scraping blade 24- is secured to the said shaft in alignment with the. inner edge of the wheel. It will be noted that. theside of the blade 24adjacent the wheel 9 is vertical while the opposite side is beveled to provide the sharpened edge 25, thus preventing said blade from being forced away from the wheel by the mud thereon as, will be understood. The spring arm 33 is secured on the shaft 14 inwardly of the blade clamp 31 and the stop arm 38' is then secured to the shaft inwardly of the arm 33. This arm 38 is so fixed to thesh'aft14 and the blades 17 and 24 are so arranged relative to one another that the blades will be in their proper operative or scraping position as shown when the arm 38 contacts the underside of the platform D. The spring 37 connected to the hook 36 on the spring arm. 33 is extended forwardly beneath the platform D and secured foa suitable bolt 41 in the: platform to holdthe blades 17 and 24 In their proper. positions relative to the wheel A. The stop arm 38 does not allow the blade 17 to contact the wheel periphery since this would cause wear on the blade. The shaft 14 is held in its proper position against axial displacement by suitably positioned collars 42 secured in place on the said shaft by means of set screws 43.

It will. be understood. that. this; positioning of the scraping blades 17 and 24 will enable them to completely remove mud from the wheel as said wheel rotates during the usual forward movement of the tractor. The blade 24 due to its'arcuate shape tends to force mud and the like outward from the wheel rim and from between the lugs thereon and this action is further. aided by the; blade "l'Z which cause anupward pressure.- on-the: shaft 14 causing that shaft to raise, theclampplates 10 upward to release the scraping assembly from the; attaching bracket. This action prevents injury either to the: tractor fender or to the scraper itself.

The device is heredescribed as applied only to one fender of the tractor but. it is understood that the same arrangement of scraping elementsv and. their supporting. means maybe usedon the other fender for scraping the mud from the other wheel. It will alscbe apparent that any of the scraping blades: may be removed when their use is not. desired and also that a wheel edge scraping blade similar to the blade 24 may be provided for scraping the outer edge of the wheel.

While-I have herein set forth a certain preferred embodiment of the. invention it is understood that I may varyfrom the same in minor structural details, not. departing from the spirit of the invention and within the scope of the appended claims.

I claim:

In combination with a tractor wheel, fender and frame, a device-of the kind described, comprising a bracket secured to the fender,

. hangers extended, rearwardly from the lower margin of the bracket, U-shaped' open loops at the ends of the brackets, arms extended from the lower margin of the. bracket to the lower bight of the loops, a shaft seated inthe .said bolts being passed loosely downward through the hangers and arms, nuts on the lower ends of the bolts, expansion coil springs "braced between the said nuts and the arms,

a wheel center scraping blade mounted on the shaft, an arcuate wheel edge scraping blade operatably mounted on the shaft in alignment with the edge of the tractor wheel, a

spring arm secured on the shaft, a coil spring stretched between the said spring arm and the tractor frame, and adapted to normally rotate the shaft to bring the wheel center and edge scraping blades into operative position relative to the tractor Wheel, and a stop arm adjustably secured to the shaft and adapted to engage the tractor frame whereby to limit the said rotation of the shaft under the influence of the said spring and hold the wheel center scraping blade out of actual contact with the tractor Wheel.

In testimony whereof I afiix my signature,-

KARL VON BRETHORST. 

